Answer:
b = 17
Step-by-step explanation:
Since PQ = RQ then ΔPQR is isosceles and QS is a perpendicular bisector
Hence PS = RS = 17 ⇒ b = 17
Answer:
The sum of squares is the sum of the square of variation, where variation is defined as the spread between each individual value and the mean. To determine the sum of squares, the distance between each data point and the line of best fit is squared and then summed up. The line of best fit will minimize this value.
Answer:
99% Confidence interval: (0.21,0.27)
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 1370
Proportion of adults who rated economy as good =
![\hat{p} = 24\% = 0.24](https://tex.z-dn.net/?f=%5Chat%7Bp%7D%20%3D%2024%5C%25%20%3D%200.24)
99% Confidence interval:
![\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}](https://tex.z-dn.net/?f=%5Chat%7Bp%7D%5Cpm%20z_%7Bstat%7D%5Csqrt%7B%5Cdfrac%7B%5Chat%7Bp%7D%281-%5Chat%7Bp%7D%29%7D%7Bn%7D%7D)
![z_{critical}\text{ at}~\alpha_{0.01} = \pm 2.58](https://tex.z-dn.net/?f=z_%7Bcritical%7D%5Ctext%7B%20at%7D~%5Calpha_%7B0.01%7D%20%3D%20%5Cpm%202.58)
Putting the values, we get:
![=0.24\pm 2.58(\sqrt{\dfrac{0.24(1-0.24)}{1370}}) = 0.24\pm 0.0297\\\\=(0.2103,0.2697)\\\approx (0.21,0.27)](https://tex.z-dn.net/?f=%3D0.24%5Cpm%202.58%28%5Csqrt%7B%5Cdfrac%7B0.24%281-0.24%29%7D%7B1370%7D%7D%29%20%3D%200.24%5Cpm%200.0297%5C%5C%5C%5C%3D%280.2103%2C0.2697%29%5C%5C%5Capprox%20%280.21%2C0.27%29)
you keep the 2k
so 5(-45)5x is 5 * -45*5 = -1125
the answer is 2k+-1125x